2 H and 18 O depletion of water close to organic surfaces

Hydrophilic surfaces influence the structure of water close to them and may thus affect the isotope composition of water. Such an effect should be relevant and detectable for materials with large surface areas and low water contents. The relationship between the volumetric solid : water ratio and th...

Full description

Saved in:
Bibliographic Details
Published in:Biogeosciences 2016-06, Vol.13 (10), p.3175-3186
Main Authors: Chen, Guo, Auerswald, Karl, Schnyder, Hans
Format: Article
Language:English
Subjects:
Casein
Chemical composition
Composition effects
Cotton
Filter paper
Fractionation
Grasslands
Isotope composition
Isotope fractionation
Isotopes
Meteoric water
Moisture content
Mud-water interfaces
Organic matter
Organic soils
Silage
Soil
Soil investigations
Soil moisture
Soil water
Solutes
Thickness
Thin films
Volatiles
Water content
Water depth
Water purification
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Hydrophilic surfaces influence the structure of water close to them and may thus affect the isotope composition of water. Such an effect should be relevant and detectable for materials with large surface areas and low water contents. The relationship between the volumetric solid : water ratio and the isotopic fractionation between adsorbed water and unconfined water was investigated for the materials silage, hay, organic soil (litter), filter paper, cotton, casein and flour. Each of these materials was equilibrated via the gas phase with unconfined water of known isotopic composition to quantify the isotopic difference between adsorbed water and unconfined water. Across all materials, isotopic fractionation was significant (p
ISSN:1726-4189
1726-4170
1726-4189
DOI:10.5194/bg-13-3175-2016